Set-up paper box



Jan. 15, 1924' E. w. LABOMBARDE SET UP PAPER BOX Filed pee/2, 1921 Patent Jan. 15,1924.

F iT'Eo STATES smear PAPER 301x.

Application filed December 2, 1921. Serial No 519,357.

To all whom it may concern:

Be it known that 1, ELIE LABOM- BARDE, a citizen of the United States, and resident of Nashua, in the county of Hillsborough and State of New Hampshire,-have invented certain new and useful Improvements in Set-Up Paper Boxes, of which the following is a specification.

' This invention relates to the manufacture to of paper boxes of the type commonly known as set up boxes such as are used for pairs of shoes. Such boxes are made from paper board or so-called box board which is a cheap but not a strong material. such boxes are improved in appearance by covering them with blanks of highly glazed or finished thin paper which, of course, adds considerably to the cost in material and labor or time.

The object of the present invention is the production of set up boxes which are not only low in cost, and strong, but also having a finished external appearance without employing covering blanks. as Of the accompanying drawings:

Figure 1 is a plan view of a blank for making one of my improved boxes, said view also illustrating wall strengthening panels and corner reinforcing tabs or 80 patches which latter'may or may not be employed.

Figures 2 and 3 are perspective views illustrating how the blank is folded to complete box form.

Referring first to Figure 1, box board material having one surface which is to formthe outside of the box calendered or smooth finished, is cut and creased to form a central or body portion 12, side wall sections 13, 14-, and end wall sections 15, the sections 13 having end flaps 16, 17, and the flaps 17 having edge flaps 18. The edges of the flaps 16, 17, are oblique, with curved ends, for a purpose explained hereinafter.

To strengthen the sections '13 I adhesively secure thereto panels 19 ofmaterial which is cheap and stiff, such as chip board.

"While each panel 19 may be in sections, or of lesser size than illustrated, I prefer that it shall be in a single piece and of a length to extend substantially the full length of the wall section 13 to which it is glued, and of a width so that when the section 14: is folded over as shown in Figure 2, and glued down, 5. the edges of the members 19 and M will Usually meet or nearly meet so as to be substantially flush and present a smooth inside surface.

In Figure 1 I also illustrate patches'or tabs a. As these are claimed in another application filed by me Nov. 7, 1921, Serial No. 513,272, it will be sufficient herein to explain that said tabs at are of thin strong material such as kraft paper, and are held in position, as by suitable adhesive, in only the dotted areas, so that, when the blank is folded to box form' the said tabs will be interfolded with corner portions thereof as explained in said other application. Since said tabs, so faras concerns the present application, may be omitted, they are not illustrated in Figures 2 and 3.

When the blank with its panels 19 as shown in Figure 1 (disregarding the tabs a) is folded, the sections 14 are folded over and glued down onto the sections 13 (Figs Next, the end sections 15 are turned to- 2). upright position and then the side walls with their panels 19. are turned up and the flaps 16, 17, swun toward each other (Fig. 3) until their oblique edges meet (Fig. 3). Then, upon folding the edge flaps 18 over the tops of the sections 15 and securing them, as by any suitable adhesive, to the inner surface thereof, the folding of the blank to set up condition is completed. 0f course a suitable adhesive may be employed to secure the two flaps 16 to the outer surfaces of the two end sections 15, but this is not essential since the labels 20 presently de-- scribed may sufice to hold the ends of the box in proper folded condition.

An important feature of the present invention consists in the formation of the flaps 16, 17, with oblique edges and so proportioned that said edges will not overlap but meet flush with and close to each other as indicated in Figure 3. As shown in said figure the meeting line of said edges extends downward in an oblique direction from one top corner of the box and not from a point between two corners. This formation enables each edge flap 18 to extend, without division, the full width of the box and enables the box as a whole to present a continuous smooth rounded upper edge the full length of each folded end wall. By forming the flaps 16, 17, with oblique edges substantially illustrated, and so that when the blank is folded to but form said edges abut on an obiique line, the walls of the box which include said flaps are much stronger than if any portions of the flap edges were to meet on a vertical line. This is because internal pressure due to the contents of the box or a pull-oi lingers against the inside of the box is resisted by both of the flaps 16, 17, which extend across the midwidth of the box wall. Un the other hand, any vertical joints or division lines between such flaps reduce the strengthof the walls. Each side wall, of course, presents a continuous smooth rounded upper edge due to the folding of its section 1.4.

The reason for convexing the edge at the tip of each flap 16 and correspondingly concaving the mating edge of flap 1? is to avoid the existence of an acute tip of pasteboard such as would result if the obliquity of the meetingedges were continuous from end to end. If the tip of the flap 16 should be acute angled instead of rounded, said tip would be liable to be deflected or bent over during handling of the blank or during the folding operation, since the material of which these boxes are made is not inher ently stiff.

It is customary for boxes of this character to have end labels. By my invention I am able to utilize labels to not only impart a finished appearance to the ends of the box but also to serve. or aid, in holding the box in folded condition. In Figure 3 a label is indicated at 20, said label being represented, for convenience of illustration, as thicker than would be used in practice. 'l/Vhen a label 20, substantially equal in area to the two flaps 16, 17, is pasted over said flaps at each end of the box, the two labels serve, in connection with the smooth outer surfaces of the sections 13, to impart an external fin ish to the completed box without requiring the use of any covering material. Owing to the formation of the flaps 16, 17, with oblique edges which closely meet shown in Figure 3, the end labels 20 can be 0i quite thin material and still effectually conceal said flaps without any surface irregularity to betray the joint. As a whole, the completed. box, without having any paper covering such as usually employed, is entirely free from raw sages or the exposition of any joints.

it is to be understood that l not limit myself to the proportions oi the sections or flaps illustrated since the relative of the different portions may be such as to provide deeper or shallower box members, or Oi greater or lesser lengths relatively to their widths. it is also to be understood that the. terms side wall and end wall are employed for the sake of clearncss of description and not as limiting terms in the sense that the box must be longer one wa than the other.

While the side wall sections 13 are illustrated as strengthened by separat panels 19,

Serial No. 637,998.,

it is to be understood that 1 am not limited to such specific structure as said separate panels may be integral with one another. In other words a single strip may extend across thebottom section 12 and onto both wall sections 13. Such structure is especially serviceable when the boxes are to be used for fruit such as berries.

For some purposes it is desirable to additionally strengthen those portions of the box which constitute the top edges of the walls or the corners thereof. To this end I employ strands of strong material I) which, for brevity of description and not for purposes of limitation, I shall refer to as string. Connected to the blank (F i 1) adhesively or otherwise, either as additions to the patches a or independent thereof, are suitable lengths of string 6 b in such locations that the ends of the strings will extend across those portions of the blank which, when the blank is folded to set up condition, form the upper corners of the box. In Figure l. 1 illustrate four short lengths of string, one for each corner of the box. These may be combined with the patches a before the latter are applied to the blanks, and they may be of any length. In fact there may be but two strings, each one long enough to extend along the crease line between sections 13 and 14 with its ends cross ing or lapping onto the sections 17, 18. That is, each pair of short strings illustrated as in alinement may be one continuous string. Gbviously each of said reinforcements may consist of a plurality of strings instead of one. In either case the reinforcing strings are laid. against or applied to the blanks in positions so that when the blanks are folded up to form complete boxes said strings extend around the top corners thereof within the double-thick or folded edges of the. walls, and thereby obstruct tendency of the corners to be broken or torn down.

I do not herein claim the employment of stiiiening panels such a rose illustrated at 19, irrespective of "i tions of the wall seen edges of said panels, a subject matter of clai this to meet the outer the same forms the in my application May 10, 1923 as, in eo *,.art a continuation a ibed my invention, I

Having new (1 claim ing of edge por ine eoe wall sections, the side wall sections having end flaps overlapping thesaid end wall sections and abutting edge to edge on an oblique line, said box being constructed. to

retain said end flaps in abutting relation ship.

lo A set up' paper box comprising a bottom section having integral side and end wall sections, the side wall sections having end flaps overlapping the said end wall sections, and abutting edge to edge, on an oblique line, one of the end flaps at each end of the box having anintegiral portion folded over the top of the adjacent end wall section.

5. A. set up paper box'comprising a bet tom section having integral side and, end wall sections, the side wall sections having end flaps overlapping the said end wall sections and abutting edge to edge, on an oblique line, and an adhesively secured covering on the outer surfaces of each pair of the said end flaps and crossing the abutting edges thereon 6. A set up paper box comprising a bottom section havingintegral side and end wall sections, the side wall sections having end flaps overlapping the said end wall sections and abutting edgeto edge on an oblique-line, the lower end of said line being curved downwardly, and a covering adhesively secured to the outer surfaces of each pair of end flaps.

In testony whereof I have afixed my signature EL We QARDE. 

